JP2011257013A - Air conditioning control program, and air conditioning control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an air conditioning control program and an air conditioning control device which facilitate the development of derivative models in an air conditioner using a control program that includes a periodic processing and which decrease errors in the procedure when adding or varying a periodic processing.SOLUTION: A computer for controlling an air conditioning device 20 including a plurality of actuators is designed to perform: periodic processing segmentation segmenting the periodic processing periodically called in control of the air conditioning device 20 as a periodic processing segment 1; periodic processing allocation allocating the periodic processing segments 1 to a periodic processing table 3 mapping the periods and classes of the periodic processings; and periodic processing start specifying the periodic process segment 1 by referring to the periodic processing table 3 according to a timer interruption by a periodic timer 6, calling and starting the periodic processing.

Description

  The present invention relates to an air conditioning control program and an air conditioning control device, and more particularly to a program structure that facilitates development of a derivative model.

  In recent years, with the advancement of microcomputer performance and software development technology, it has become possible to install advanced and complex functions in air conditioners, and control programs for air conditioners have become larger and more complex. At the same time, in order to respond to the diverse needs of users, for example, low-priced versions, popular versions, high-performance versions of product series, lineups of models with various capacities according to applications, or specific customer requests Diversification of product variations such as the provision of special functions according to the situation is progressing remarkably. In order to deal with the many models that make up such a product series, it is essential to make it easy to change programs according to demands and to improve the efficiency of the development of derivative models.

  In general, an air conditioner control program is configured to repeatedly call a plurality of small processes such as an input process from a temperature sensor, a control process such as cooling and heating, and an operation of a compressor at a period necessary for each process. The processing cycle is determined by the specifications of the control device and product used, and the same processing may be operated at different cycles depending on the product. Also, a certain process may be replaced with another process that matches the product specification. A series of processing is roughly limited in order such as input, control, and output, and execution of processing in the wrong order can cause performance degradation and abnormal operation, so be careful when changing the processing cycle or replacing processing. It will be necessary.

  As a method for facilitating process changes and process reuse in accordance with such product characteristics, for example, Patent Document 1 discloses a method of storing product-specific information, local setting information, program control constants, and the like in a table. Has been proposed.

JP 2001-91031 A

  In the method of Patent Document 1, when a derived model can be realized by changing the tabulated information, the control program does not need to be changed, so that development efficiency can be expected. However, since it is necessary to change the control program with respect to changes in the processing contents and cycle, in this case, it is difficult to improve the efficiency of development. In addition, if a change that does not comply with the restrictions on the processing order is mistakenly performed, there is a problem that performance degradation or abnormal operation may be caused.

  The present invention has been made in view of the above, and it is possible to easily develop a derivative model in an air conditioner including a periodic process in a control program, and to reduce an error in the order when adding or changing the periodic process. An object is to obtain an air conditioning control program and an air conditioning control device.

  In order to solve the above-described problems and achieve the object, the present invention converts a periodic process that is periodically called in the control of the air conditioner into a computer that controls the air conditioner including a plurality of actuators. By the periodic processing component conversion, the periodic processing allocation that assigns the periodic processing component to the periodic processing table that associates the cycle and type of the periodic processing, and the reference to the periodic processing table according to the timer interrupt by the periodic timer The periodic processing component is specified, and periodic processing activation for calling and starting the periodic processing is executed.

  According to the present invention, reusing and changing the periodic processing at the time of development of the derivative model is facilitated by converting the periodic processing into components. In addition, since the cycle is short, it is possible to preferentially call a process that requires a stricter periodicity. Furthermore, it is possible to guarantee the order of input (acquisition, verification), control (whole, individual), and output (verification, application), and reduce the mixing of errors in the processing sequence when developing a derivative model or changing specifications. As a result, it is possible to facilitate the development of the derivative model and to reduce the order error when adding or changing the periodic processing.

FIG. 1 is a block diagram showing a configuration of an air conditioner according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a periodic processing component. FIG. 3 is a diagram illustrating an example of a periodic processing table. FIG. 4 is a flowchart showing a procedure of processing by the periodic processing assigning means. FIG. 5 is a flowchart showing a procedure of processing by the periodic process starting unit. FIG. 6 is a diagram for explaining the priority of periodic processing in a certain offset column in the periodic processing table. FIG. 7 is a diagram illustrating an example of a column with an offset of 0 ms in the periodic processing table.

  Embodiments of an air conditioning control program and an air conditioning control device according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is a block diagram showing a configuration of an air conditioner according to an embodiment of the present invention. The air conditioner 20 includes an air conditioner control device 30, an indoor temperature sensor 13, a refrigerant temperature sensor 14, a compressor 15, an expansion valve 16, and a fan 17. The air conditioning control device 30 controls the air conditioning device 20 according to the air conditioning control program. The air conditioning control program is executed by a computer that controls the air conditioning control device 30.

  The periodic processing component 1 is a component of periodic processing that is periodically called by executing an air conditioning control program in the control of the air conditioner 20. The periodic processing assigning means 2 assigns the periodic processing component 1 to the periodic processing table 3. The periodic processing table 3 is a table representing the timing and order of calling the periodic processing, and the periodic processing is registered in association with the cycle and the type (task type).

  The periodic process starting means 4 receives the timer interrupt from the periodic timer 6 and refers to the periodic processing table 3 to start the specified periodic process 5. The periodic process 5 is classified into task types of an input acquisition process 7, an input verification process 8, an overall control process 9, an individual control process 10, an output verification process 11, and an output application process 12. The input acquisition process 7 acquires information from hardware. The input verification process 8 verifies the information input by the input acquisition process 7 and confirms that the input value is reliable.

  The overall control process 9 determines the operation policy of the entire system using the input value that has undergone the input verification process 8. The individual control process 10 determines an output for each domain based on the overall operation policy in the overall control process 9. The output verification process 11 integrates and verifies the output values for each domain determined in the individual control process 10, and confirms that there is no problem in the output values. The output application process 12 executes the output through the output verification process 11 to the hardware. The classifications 7 to 12 of the periodic process 5 have the same processing order and sequence in a series of controls.

  The input acquisition process 7 acquires information from the indoor temperature sensor 13 and the refrigerant temperature sensor 14. The indoor temperature sensor 13 detects the indoor temperature. The refrigerant temperature sensor 14 detects the temperature of the refrigerant. The output application process 12 outputs to the compressor 15, the expansion valve 16, and the fan 17 that are actuators. The compressor 15 adjusts the degree of compression of the refrigerant. The expansion valve 16 adjusts the amount of refrigerant flowing through the pipe by changing the opening of the valve. The fan 17 adjusts the temperature of the refrigerant.

  FIG. 2 is a diagram illustrating an example of a periodic processing component. The periodic processing component 1 has a “period” that is the time required for one cycle of processing, an “offset” that indicates a start time shift, a “task type” that indicates which of the periodic processes to call is classified into classifications 7 to 12, and a period The “periodic process” that represents the call destination of the actual process to be executed is configured as an element. For example, the row 18 represents the periodic processing component 1 that calls the “refrigerant temperature A sensor input processing” with the cycle of 1 ms, no offset, and the task type “input acquisition processing”.

  FIG. 3 is a diagram illustrating an example of a periodic processing table. The cycle processing table 3 is a matrix in which the vertical axis represents a cycle and the horizontal axis represents an offset. Each cell of this matrix is further subdivided by task type. The periods are arranged in the order of shortness (smallest value). The task types are arranged in the order of “input acquisition process”, “input verification process”, “overall control process”, “individual control process”, “output verification process”, and “output application process”. This order matches the calling order of periodic processing at a certain point in time. By arranging the periodic processing component 1 on the periodic processing table 3, it is possible to specify the periodic processing to be called at a certain point in time and the order thereof.

  In addition, in the row having a period of 1 ms, the periodic processing component 1 arranged in the column of offset 0 ms is similarly arranged in each column of offset 1 to 9 ms. In the row having a period of 2 ms, the periodic processing component 1 arranged in the column of offset 0 to 1 ms is similarly arranged in each column of offset 2 to 3 ms, 4 to 5 ms, 6 to 7 ms, and 8 to 9 ms. In a row having a period of 5 ms, the periodic processing component 1 arranged in the column of offset 0 to 4 ms is similarly arranged in the column of offset 5 to 9 ms.

  FIG. 4 is a flowchart showing a procedure of processing by the periodic processing assigning means. The periodic process assigning means 2 determines whether or not the assignment to the periodic process table 3 has been performed for all the periodic process components 1 (step S1). When the allocation of all the periodic processing components 1 is completed (step S1, Yes), the periodic processing allocation unit 2 ends the process.

  When there is a periodic processing component 1 that has not been assigned to the periodic processing table 3 (step S1, No), the periodic processing assignment unit 2 selects one of the periodic processing components 1 that have not yet been assigned. (Step S2). The periodic process assigning means 2 refers to the period, offset, and task type of the periodic process component 1 selected in step S2, and determines an arrangement position on the periodic process table 3 corresponding to the referenced period, offset, and task type. (Step S3). In step S4, the periodic process assigning means 2 arranges the periodic process component 1 selected in step S2 in the arrangement position determined in step S3 in the periodic process table 3. The periodic process assigning means 2 executes the procedure from step S2 to step S4, and then performs the determination in step S1 again.

  FIG. 5 is a flowchart showing a procedure of processing by the periodic process starting unit. The processing by the periodic process starting unit 4 starts when the periodic process starting unit 4 receives a timer interrupt from the periodic timer 6. When receiving the timer interrupt, the periodic process starting means 4 determines an offset from the count of the periodic timer 6 (step S11). The cycle timer 6 increments the current offset count by 1 each time a timer interrupt occurs, and returns the offset count to 0 when the count reaches the maximum cycle.

  The periodic process activation unit 4 determines whether or not there is an unprocessed periodic process in the column corresponding to the offset determined in step S11 in the periodic process table 3 (step S12). When the execution of all the periodic processes for the corresponding offset has been completed (step S12, Yes), since all the periodic processes for the timer interrupt have been executed, the periodic process activation unit 4 ends the process.

  When there is an unprocessed periodic process in the corresponding offset column (step S12, No), the periodic process activation unit 4 selects the highest priority periodic process from the unprocessed periodic processes (step S13). The periodic process starting unit 4 starts the periodic process selected in step S13 (step S14). The periodic process starting unit 4 executes the procedure of step S13 and step S14, and then performs the determination of step S12 again. As described above, the periodic process activation unit 4 specifies the periodic process component 1 by referring to the periodic process table 3 according to the timer interrupt by the periodic timer 6, and calls and activates the periodic process.

  FIG. 6 is a diagram for explaining the priority of periodic processing in a certain offset column in the periodic processing table. The priority of the cycle process is first determined by the cycle. The periodic process starting means 4 gives priority to calling and starting a periodic process with a short period among the unprocessed periodic processes in the column of the corresponding offset.

  The priority in the period processing of the same period is determined by the task type. The periodic process starting means 4 is an “input acquisition process”, “input verification process”, “overall control process”, “individual control process”, “output verification process”, “output application process” in the periodic process of the same period. Call and start in order. Accordingly, the air conditioning control program causes the periodic processing to be executed in the order indicated by the arrow 19 in the figure.

  FIG. 7 is a diagram illustrating an example of a column with an offset of 0 ms in the periodic processing table. In this example, the cyclic processing is performed according to the above-described priorities, “refrigerant temperature A sensor input”, “room temperature sensor input”, “refrigerant temperature A abnormality detection”, “compressor output voltage check”, “air conditioner state determination” ”In this order. The periodic process starting unit 4 starts periodic processes in this order.

  According to this embodiment, the developer can change a periodic process to another periodic process or add a periodic process by changing the registered content of the periodic process component 1 when developing a derivative model or changing specifications. It can be performed. By making the periodic processing into parts, it is possible to easily realize derivative model development and specification change without changing the control program for calling the periodic processing.

  In addition, according to this embodiment, it is guaranteed to preferentially call a process that requires a stricter periodicity because the period is short. Furthermore, by guaranteeing the order of input (acquisition, verification), control (whole, individual), and output (verification, application), it is possible to reduce mixing of errors in the processing order when developing a derivative model or changing specifications. As a result, it is possible to easily develop a derivative model and reduce an error in the order when adding or changing a periodic process, thereby obtaining an air conditioner having high performance and high reliability.

  As described above, the air-conditioning control program and the air-conditioning control apparatus according to the present invention are particularly suitable when various derivative models are developed and specifications are changed.

DESCRIPTION OF SYMBOLS 1 Periodic process component 2 Periodic process allocation means 3 Periodic process table 4 Periodic process starting means 5 Periodic process 6 Periodic timer 7 Input acquisition process 8 Input verification process 9 Overall control process 10 Individual control process 11 Output verification process 12 Output application process 13 Indoor Temperature sensor 14 Refrigerant temperature sensor 15 Compressor 16 Expansion valve 17 Fan 20 Air conditioning device 30 Air conditioning control device

Claims (6)

In a computer that controls an air conditioner equipped with a plurality of actuators,
Periodic processing to be called periodically in the control of the air conditioner is made into parts, and periodic processing parts are made into periodic processing parts,
A periodic process assignment for assigning the periodic process component to a periodic process table in which the period and type of the periodic process are associated;
An air-conditioning control program, wherein the periodic processing component is identified by referring to the periodic processing table according to a timer interrupt by a periodic timer, and periodic processing is activated to call and activate the periodic processing.   The cycle processing component includes, as elements, a cycle of the cycle processing, an offset indicating a deviation at the start of the cycle processing, a type of the cycle processing, and a call destination of the cycle processing. The air conditioning control program described in 1.   The cycle processing table is characterized in that the cycle processing component is arranged in a matrix in which the cycle, the offset, and the type are associated with each other, and the array of the types is matched with the calling order of the cycle processing. 2. The air conditioning control program according to 2.   4. The air conditioning control program according to claim 1, wherein in the periodic process activation, the periodic process with a short period is preferentially called. 5. The type includes input acquisition processing for acquiring information, input verification processing for verifying information input by the input acquisition processing, and overall control for determining an operation policy of the entire system using the information that has undergone the input verification processing A process, an individual control process for determining the output of each domain based on the operation policy in the overall control process, an output verification process for verifying the output determined in the individual control process, and an output after the output verification process Output application processing to include,
The cycle processing table includes the types arranged in the order of the input acquisition process, the input verification process, the overall control process, the individual control process, the output verification process, and the output application process. The air conditioning control program according to any one of 1 to 4. An air conditioning control device that controls an air conditioning device including a plurality of actuators according to an air conditioning control program,
A periodic processing table periodically registered by execution of the air conditioning control program is registered in association with the cycle and type,
Periodic processing assigning means for allocating periodic processing parts formed by converting the periodic processing into parts in the periodic processing table;
An air-conditioning control apparatus comprising: periodic process starting means for starting a specified periodic process by receiving a timer interrupt from a periodic timer and referring to the periodic process table.

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